// -------------------------------------------------------------------
// DHTML Window Widget- By Dynamic Drive, available at: http://www.dynamicdrive.com
// v1.0: Script created Feb 15th, 07'
// v1.01: Feb 21th, 07' (see changelog.txt)
// v1.02: March 26th, 07' (see changelog.txt)
// v1.03: May 5th, 07' (see changelog.txt)
// v1.1:  Oct 29th, 07' (see changelog.txt)
// -------------------------------------------------------------------

var dhtmlwindow={
imagefiles:['../../imgs/icons/ico_popup_min.gif', '../../imgs/icons/ico_popup_close.gif', '../../imgs/icons/ico_popup_restore.gif', '../../imgs/icons/ico_popup_resize.gif'], //Path to 4 images used by script, in that order
ajaxbustcache: true, //Bust caching when fetching a file via Ajax?
ajaxloadinghtml: '<b>Loading Page. Please wait...</b>', //HTML to show while window fetches Ajax Content?

minimizeorder: 0,
zIndexvalue:100,
tobjects: [], //object to contain references to dhtml window divs, for cleanup purposes
lastactivet: {}, //reference to last active DHTML window

init:function(t){
	var domwindow=document.createElement("div"); //create dhtml window div
	domwindow.id=t;
	domwindow.className="dhtmlwindow";
	var domwindowdata='';
	domwindowdata='<div class="drag-handle">';
	domwindowdata+='DHTML Window <div class="drag-controls"><img src="'+this.imagefiles[0]+'" title="Minimize" /><img src="'+this.imagefiles[1]+'" title="Close" /></div>';
	domwindowdata+='</div>';
	domwindowdata+='<div class="drag-contentarea"></div>';
	domwindowdata+='<div class="drag-statusarea"><div class="drag-resizearea" style="background: transparent url('+this.imagefiles[3]+') top right no-repeat;">&nbsp;</div></div>';
	domwindowdata+='</div>';
	domwindow.innerHTML=domwindowdata;
	document.getElementById("dhtmlwindowholder").appendChild(domwindow);
	//this.zIndexvalue=(this.zIndexvalue)? this.zIndexvalue+1 : 100 //z-index value for DHTML window: starts at 0, increments whenever a window has focus
	var t=document.getElementById(t);
	var divs=t.getElementsByTagName("div");
	for (var i=0; i<divs.length; i++){ //go through divs inside dhtml window and extract all those with class="drag-" prefix
		if (/drag-/.test(divs[i].className))
			t[divs[i].className.replace(/drag-/, "")]=divs[i]; //take out the "drag-" prefix for shorter access by name
	}
	//t.style.zIndex=this.zIndexvalue //set z-index of this dhtml window
	t.handle._parent=t; //store back reference to dhtml window
	t.resizearea._parent=t; //same
	t.controls._parent=t; //same
	t.onclose=function(){return true} //custom event handler "onclose"
	t.onmousedown=function(){dhtmlwindow.setfocus(this)} //Increase z-index of window when focus is on it
	t.handle.onmousedown=dhtmlwindow.setupdrag //set up drag behavior when mouse down on handle div
	t.resizearea.onmousedown=dhtmlwindow.setupdrag //set up drag behavior when mouse down on resize div
	t.controls.onclick=dhtmlwindow.enablecontrols
	t.show=function(){dhtmlwindow.show(this)} //public function for showing dhtml window
	t.hide=function(){dhtmlwindow.hide(this)} //public function for hiding dhtml window
	t.close=function(){dhtmlwindow.close(this)} //public function for closing dhtml window (also empties DHTML window content)
	t.setSize=function(w, h){dhtmlwindow.setSize(this, w, h)} //public function for setting window dimensions
	t.moveTo=function(x, y){dhtmlwindow.moveTo(this, x, y)} //public function for moving dhtml window (relative to viewpoint)
	t.isResize=function(bol){dhtmlwindow.isResize(this, bol)} //public function for specifying if window is resizable
	t.isScrolling=function(bol){dhtmlwindow.isScrolling(this, bol)} //public function for specifying if window content contains scrollbars
	t.load=function(contenttype, contentsource, title){dhtmlwindow.load(this, contenttype, contentsource, title)} //public function for loading content into window
	this.tobjects[this.tobjects.length]=t;
	return t; //return reference to dhtml window div
},

open:function(t, contenttype, contentsource, title, attr, recalonload){
	var d=dhtmlwindow; //reference dhtml window object
	function getValue(Name){
		var config=new RegExp(Name+"=([^,]+)", "i"); //get name/value config pair (ie: width=400px,)
		return (config.test(attr))? parseInt(RegExp.$1) : 0; //return value portion (int), or 0 (false) if none found
	}
	if (document.getElementById(t)==null) //if window doesn't exist yet, create it
		t=this.init(t); //return reference to dhtml window div
	else
		t=document.getElementById(t);
	this.setfocus(t);
	t.setSize(getValue(("width")), (getValue("height"))); //Set dimensions of window
	var xpos=getValue("center")? "middle" : getValue("left"); //Get x coord of window
	var ypos=getValue("center")? "middle" : getValue("top"); //Get y coord of window
	//t.moveTo(xpos, ypos) //Position window
	if (typeof recalonload!="undefined" && recalonload=="recal" && this.scroll_top==0){ //reposition window when page fully loads with updated window viewpoints?
		if (window.attachEvent && !window.opera) //In IE, add another 400 milisecs on page load (viewpoint properties may return 0 b4 then)
			this.addEvent(window, function(){setTimeout(function(){t.moveTo(xpos, ypos)}, 400)}, "load")
		else
			this.addEvent(window, function(){t.moveTo(xpos, ypos)}, "load")
	}
	t.isResize(getValue("resize")); //Set whether window is resizable
	t.isScrolling(getValue("scrolling")); //Set whether window should contain scrollbars
	t.style.visibility="visible";
	t.style.display="block";
	t.contentarea.style.display="block";
	t.moveTo(xpos, ypos); //Position window
	t.load(contenttype, contentsource, title);
	if (t.state=="minimized" && t.controls.firstChild.title=="Restore"){ //If window exists and is currently minimized?
		t.controls.firstChild.setAttribute("src", dhtmlwindow.imagefiles[0]); //Change "restore" icon within window interface to "minimize" icon
		t.controls.firstChild.setAttribute("title", "Minimize");
		t.state="fullview"; //indicate the state of the window as being "fullview"
	}
	return t;
},

setSize:function(t, w, h){ //set window size (min is 150px wide by 100px tall)
	t.style.width=Math.max(parseInt(w), 150)+"px";
	t.contentarea.style.height=Math.max(parseInt(h), 100)+"px";
},

moveTo:function(t, x, y){ //move window. Position includes current viewpoint of document
	this.getviewpoint(); //Get current viewpoint numbers
	t.style.left=(x=="middle")? this.scroll_left+(this.docwidth-t.offsetWidth)/2+"px" : this.scroll_left+parseInt(x)+"px";
	t.style.top=(y=="middle")? this.scroll_top+(this.docheight-t.offsetHeight)/2+"px" : this.scroll_top+parseInt(y)+"px";
},

isResize:function(t, bol){ //show or hide resize inteface (part of the status bar)
	t.statusarea.style.display=(bol)? "block" : "none";
	t.resizeBool=(bol)? 1 : 0;
},

isScrolling:function(t, bol){ //set whether loaded content contains scrollbars
	t.contentarea.style.overflow=(bol)? "auto" : "hidden";
},

load:function(t, contenttype, contentsource, title){ //loads content into window plus set its title (3 content types: "inline", "iframe", or "ajax")
	if (t.isClosed){
		alert("DHTML Window has been closed, so no window to load contents into. Open/Create the window again.");
		return
	}
	var contenttype=contenttype.toLowerCase(); //convert string to lower case
	if (typeof title!="undefined")
		t.handle.firstChild.nodeValue=title;
	if (contenttype=="inline")
		t.contentarea.innerHTML=contentsource;
	else if (contenttype=="div"){
		var inlinedivref=document.getElementById(contentsource);
		t.contentarea.innerHTML=(inlinedivref.defaultHTML || inlinedivref.innerHTML); //Populate window with contents of inline div on page
		if (!inlinedivref.defaultHTML)
			inlinedivref.defaultHTML=inlinedivref.innerHTML; //save HTML within inline DIV
		inlinedivref.innerHTML=""; //then, remove HTML within inline DIV (to prevent duplicate IDs, NAME attributes etc in contents of DHTML window
		inlinedivref.style.display="none"; //hide that div
	}
	else if (contenttype=="iframe"){
		t.contentarea.style.overflow="hidden"; //disable window scrollbars, as iframe already contains scrollbars
		if (!t.contentarea.firstChild || t.contentarea.firstChild.tagName!="IFRAME") //If iframe tag doesn't exist already, create it first
			t.contentarea.innerHTML='<iframe src="" frameborder="0" style="margin:0; padding:0; width:100%; height: 100%" name="_iframe-'+t.id+'"></iframe>';
		window.frames["_iframe-"+t.id].location.replace(contentsource); //set location of iframe window to specified URL
		}
	else if (contenttype=="ajax"){
		this.ajax_connect(contentsource, t); //populate window with external contents fetched via Ajax
	}
	t.contentarea.datatype=contenttype; //store contenttype of current window for future reference
},

setupdrag:function(e){
	var d=dhtmlwindow; //reference dhtml window object
	var t=this._parent; //reference dhtml window div
	d.etarget=this; //remember div mouse is currently held down on ("handle" or "resize" div)
	var e=window.event || e;
	d.initmousex=e.clientX; //store x position of mouse onmousedown
	d.initmousey=e.clientY;
	d.initx=parseInt(t.offsetLeft); //store offset x of window div onmousedown
	d.inity=parseInt(t.offsetTop);
	d.width=parseInt(t.offsetWidth); //store width of window div
	d.contentheight=parseInt(t.contentarea.offsetHeight); //store height of window div's content div
	if (t.contentarea.datatype=="iframe"){ //if content of this window div is "iframe"
		t.style.backgroundColor="#FFFFFF"; //colorize and hide content div (while window is being dragged)
		t.contentarea.style.visibility="hidden";
	}
	document.onmousemove=d.getdistance; //get distance travelled by mouse as it moves
	document.onmouseup=function(){
		if (t.contentarea.datatype=="iframe"){ //restore color and visibility of content div onmouseup
			t.contentarea.style.backgroundColor="white";
			t.contentarea.style.visibility="visible";
		}
		d.stop();
	}
	return false;
},

getdistance:function(e){
	var d=dhtmlwindow;
	var etarget=d.etarget;
	var e=window.event || e;
	d.distancex=e.clientX-d.initmousex; //horizontal distance travelled relative to starting point
	d.distancey=e.clientY-d.initmousey;
	if (etarget.className=="drag-handle") //if target element is "handle" div
		d.move(etarget._parent, e);
	else if (etarget.className=="drag-resizearea") //if target element is "resize" div
		d.resize(etarget._parent, e);
	return false; //cancel default dragging behavior
},

getviewpoint:function(){ //get window viewpoint numbers
	var ie=document.all && !window.opera;
	var domclientWidth=document.documentElement && parseInt(document.documentElement.clientWidth) || 100000; //Preliminary doc width in non IE browsers
	this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body; //create reference to common "body" across doctypes
	this.scroll_top=(ie)? this.standardbody.scrollTop : window.pageYOffset;
	this.scroll_left=(ie)? this.standardbody.scrollLeft : window.pageXOffset;
	this.docwidth=(ie)? this.standardbody.clientWidth : (/Safari/i.test(navigator.userAgent))? window.innerWidth : Math.min(domclientWidth, window.innerWidth-16);
	this.docheight=(ie)? this.standardbody.clientHeight: window.innerHeight;
},

rememberattrs:function(t){ //remember certain attributes of the window when it's minimized or closed, such as dimensions, position on page
	this.getviewpoint(); //Get current window viewpoint numbers
	t.lastx=parseInt((t.style.left || t.offsetLeft))-dhtmlwindow.scroll_left; //store last known x coord of window just before minimizing
	t.lasty=parseInt((t.style.top || t.offsetTop))-dhtmlwindow.scroll_top;
	t.lastwidth=parseInt(t.style.width); //store last known width of window just before minimizing/ closing
},

move:function(t, e){
	t.style.left=dhtmlwindow.distancex+dhtmlwindow.initx+"px";
	t.style.top=dhtmlwindow.distancey+dhtmlwindow.inity+"px";
},

resize:function(t, e){
	t.style.width=Math.max(dhtmlwindow.width+dhtmlwindow.distancex, 150)+"px";
	t.contentarea.style.height=Math.max(dhtmlwindow.contentheight+dhtmlwindow.distancey, 100)+"px";
},

enablecontrols:function(e){
	var d=dhtmlwindow;
	var sourceobj=window.event? window.event.srcElement : e.target; //Get element within "handle" div mouse is currently on (the controls)
	if (/Minimize/i.test(sourceobj.getAttribute("title"))) //if this is the "minimize" control
		d.minimize(sourceobj, this._parent);
	else if (/Restore/i.test(sourceobj.getAttribute("title"))) //if this is the "restore" control
		d.restore(sourceobj, this._parent);
	else if (/Close/i.test(sourceobj.getAttribute("title"))) //if this is the "close" control
		d.close(this._parent);
	return false;
},

minimize:function(button, t){
	dhtmlwindow.rememberattrs(t);
	button.setAttribute("src", dhtmlwindow.imagefiles[2]);
	button.setAttribute("title", "Restore");
	t.state="minimized"; //indicate the state of the window as being "minimized"
	t.contentarea.style.display="none";
	t.statusarea.style.display="none";
	if (typeof t.minimizeorder=="undefined"){ //stack order of minmized window on screen relative to any other minimized windows
		dhtmlwindow.minimizeorder++; //increment order
		t.minimizeorder=dhtmlwindow.minimizeorder;
	}
	t.style.left="10px"; //left coord of minmized window
	t.style.width="200px";
	var windowspacing=t.minimizeorder*10; //spacing (gap) between each minmized window(s)
	t.style.top=dhtmlwindow.scroll_top+dhtmlwindow.docheight-(t.handle.offsetHeight*t.minimizeorder)-windowspacing+"px";
},

restore:function(button, t){
	dhtmlwindow.getviewpoint();
	button.setAttribute("src", dhtmlwindow.imagefiles[0]);
	button.setAttribute("title", "Minimize");
	t.state="fullview"; //indicate the state of the window as being "fullview"
	t.style.display="block";
	t.contentarea.style.display="block";
	if (t.resizeBool) //if this window is resizable, enable the resize icon
		t.statusarea.style.display="block";
	t.style.left=parseInt(t.lastx)+dhtmlwindow.scroll_left+"px"; //position window to last known x coord just before minimizing
	t.style.top=parseInt(t.lasty)+dhtmlwindow.scroll_top+"px";
	t.style.width=parseInt(t.lastwidth)+"px";
},


close:function(t){
	try{
		var closewinbol=t.onclose();
	}
	catch(err){ //In non IE browsers, all errors are caught, so just run the below
		var closewinbol=true;
 }
	finally{ //In IE, not all errors are caught, so check if variable isn't defined in IE in those cases
		if (typeof closewinbol=="undefined"){
			alert("An error has occured somwhere inside your \"onclose\" event handler");
			var closewinbol=true;
		}
	}
	if (closewinbol){ //if custom event handler function returns true
		if (t.state!="minimized") //if this window isn't currently minimized
			dhtmlwindow.rememberattrs(t); //remember window's dimensions/position on the page before closing
		if (window.frames["_iframe-"+t.id]) //if this is an IFRAME DHTML window
			window.frames["_iframe-"+t.id].location.replace("about:blank");
		else
			t.contentarea.innerHTML="";
		t.style.display="none";
		t.isClosed=true; //tell script this window is closed (for detection in t.show())
	}
	return closewinbol;
},


setopacity:function(targetobject, value){ //Sets the opacity of targetobject based on the passed in value setting (0 to 1 and in between)
	if (!targetobject)
		return
	if (targetobject.filters && targetobject.filters[0]){ //IE syntax
		if (typeof targetobject.filters[0].opacity=="number") //IE6
			targetobject.filters[0].opacity=value*100;
		else //IE 5.5
			targetobject.style.filter="alpha(opacity="+value*100+")";
		}
	else if (typeof targetobject.style.MozOpacity!="undefined") //Old Mozilla syntax
		targetobject.style.MozOpacity=value;
	else if (typeof targetobject.style.opacity!="undefined") //Standard opacity syntax
		targetobject.style.opacity=value;
},

setfocus:function(t){ //Sets focus to the currently active window
	this.zIndexvalue++;
	t.style.zIndex=this.zIndexvalue;
	t.isClosed=false; //tell script this window isn't closed (for detection in t.show())
	this.setopacity(this.lastactivet.handle, 0.5); //unfocus last active window
	this.setopacity(t.handle, 1); //focus currently active window
	this.lastactivet=t; //remember last active window
},


show:function(t){
	if (t.isClosed){
		alert("DHTML Window has been closed, so nothing to show. Open/Create the window again.");
		return
	}
	if (t.lastx) //If there exists previously stored information such as last x position on window attributes (meaning it's been minimized or closed)
		dhtmlwindow.restore(t.controls.firstChild, t); //restore the window using that info
	else
		t.style.display="block";
	this.setfocus(t);
	t.state="fullview"; //indicate the state of the window as being "fullview"
},

hide:function(t){
	t.style.display="none";
},

ajax_connect:function(url, t){
	var page_request = false;
	var bustcacheparameter="";
	if (window.XMLHttpRequest) // if Mozilla, IE7, Safari etc
		page_request = new XMLHttpRequest();
	else if (window.ActiveXObject){ // if IE6 or below
		try {
		page_request = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (e){
			try{
			page_request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e){}
		}
	}
	else
		return false;
	t.contentarea.innerHTML=this.ajaxloadinghtml;
	page_request.onreadystatechange=function(){dhtmlwindow.ajax_loadpage(page_request, t)}
	if (this.ajaxbustcache) //if bust caching of external page
		bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime();
	page_request.open('GET', url+bustcacheparameter, true);
	page_request.send(null);
},

ajax_loadpage:function(page_request, t){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){
	t.contentarea.innerHTML=page_request.responseText;
	}
},


stop:function(){
	dhtmlwindow.etarget=null; //clean up
	document.onmousemove=null;
	document.onmouseup=null;
},

addEvent:function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
	var tasktype=(window.addEventListener)? tasktype : "on"+tasktype;
	if (target.addEventListener)
		target.addEventListener(tasktype, functionref, false);
	else if (target.attachEvent)
		target.attachEvent(tasktype, functionref);
},

cleanup:function(){
	for (var i=0; i<dhtmlwindow.tobjects.length; i++){
		dhtmlwindow.tobjects[i].handle._parent=dhtmlwindow.tobjects[i].resizearea._parent=dhtmlwindow.tobjects[i].controls._parent=null;
	}
	window.onload=null;
}

} //End dhtmlwindow object

document.write('<div id="dhtmlwindowholder"><span style="display:none">.</span></div>'); //container that holds all dhtml window divs on page
window.onunload=dhtmlwindow.cleanup;
